If church is not in the bible where do we get the word church from?

Some theologians have erroneously stated that the word church comes from the Greek "kyrios" which means "lord," and thus "church" is those who belong to the Lord, or references the "Lord’s house." This is not, however, the origin or original meaning of the word "church."

The word church was put in King James' translation because he ordered it put there! Everywhere the Greek word "ekklesia" had any religious reference, the translators substituted the word "church" rather than give an actual translation. King James was the Head of the CHURCH of England and he was going to ensure that his "Church" got some biblical recognition. It was a terrible mistake that has been a source of great error ever since.

The translators of the King James version were forbidden to translate ekklêsia in a proper way; they were under specific orders that the word "church" was to be used instead. James' reasons for demanding the use of certain words in his new translation, were of political nature.

The etymology of the word 'church' – its origin and meaning, and how it came to appear in bible-translations.

The English word "church" came into use in the Middle Ages, some time before the 12th century. Tyndale (1525) properly translated ekklêsia as "congregation". And, as was mentioned, he used the word "church" (chirche) only twice, in Acts 14:13 and Acts 19:37 which refer to buildings connected to idol-worship.

The roots of the word "church" are as follows. It comes via the Middle English chirche, from the Old English cirice. And then, it is said that cirice in its turn came from the Greek phrase kyriake oikia (κυριακη οικια, kuriakê oikia) which meant "the Lord's house". Thus, in short, the etymology and evolution of the word "church" is as follows:

kuriakê oikia → cirice → chirche → church

" Professor Smith of Smith’s Dictionary of the Bible states that "church" comes from a word meaning "circle," which is akin to our word "circus." Professor Lipsius (German theologian during the Reformation) also shows that "church" came from "circle." Professor A. F. Fausett of Home Bible Study Dictionary" agrees with Professor Lipsius. The exhaustive ten volume Cyclopaedia of Biblical, Theological and Ecclesiastical Literature under the word "church" states that:

"It was probably connected with the Latin circus, circulus, and with the Greek kuklos. Lipsius, who was the first to reject the received tradition, was probably right in his suggestion" (Vol. II, p. 322).
Robert Brown’s work The Myth of Kirke" also confirms that "kirke" (church) means "Circle" or "Circular" (p. 22).

Dictionary of Phrase and Fable, under the entry "church" adds this:

"The etymology of this word is generally assumed to be from the Greek, kurious oikos (house of God); but this is most improbable, as the word existed in all the Celtic dialects long before the introduction of the Greek. No doubt the word means ‘a circle.’ The places of worship among the German and Celtic nations were always circular [witness circular Stonehenge, one of the most ancient stone megaliths on earth]. Compare Anglo-Saxon ‘circe,’ a small church, with ‘circol,’ a circle."

In Scotland it is called "Kirk" and in Gemany it is "Kirche," in England it is the word "Circe" (the "c" having a "k" sound). 

But according to Brown’s book, "Kirke/Circe" was also the name of a Goddess.
Kirke or Circe was the daughter of the Sun god, who was famous for taming wild animals for her circus. But get ready for this: Circe is pictured holding a golden cup in her hand mixed with wine and drugs, by which she controlled the kings of the world. (Some might go as far as to liken her to the harlot in Revelation)

So as we see here even the word ‘church’ does not have a scriptural source, it was introduced into the Christian assembly for political reasons and some would say still is used for political reasons in many places.

So why would we continue to use the term ‘church’ when it isn’t in the bible?
Why would we use the term when the words roots are not godly?
Why would we use the term to describe something that brings confusion to the saints?

The reason seems obvious - because it is an idol that has power and it needs to be dethroned.